St John's Wort plant is a short, woody shrub that grows about 16-24" tall and has masses of 1 to 2" strong yellow and fragrant flowers from mid to late summer.
Highly esteemed medicinal herb since ancient times. Used as tea, tincture or infused oil for many nerve disorders, from neuralgia and sciatica to mild depression and chronic exhaustion. The oil in the leaves have been used topically for wounds, sunburns, and general aches and pains. Perennial in zones 4-8.